Combination capping and packing device



Dec. 8,. 1931. c. BARRETT COMBINATION CAPPING AND PACKING DEVICE Filed Nov. 26, 1928 EUR!!! \NvEN- R I CLAUD H BARRET \ofl W 'TTORNEY.

Patented Dec. 8, 1931 i PATENT oFFlCE 0mm 'KARRY BARRETT, or none BEACH, oemronnm connnmxrroivcarrme Ann PACKING nnvrcn Applieation filed November 26, 1928.. Serial sol-321.3251

Thisinvention relates to 'a combination capping and packing device by means of which an. oil or gas well may be effectively prevented from flowing in event that it should 5 be out of control, such as when a well comes in while drilling or before the crew are entirely prepared to cope withunusual condi tions which might suddenly arise due to eX tremely high gas pressure, or the like. 6 10 An object of my invention is to provide a device of the character stated which can be placed around the well casing, and said casing may then be cut and a plate or packing inserted to stop the flow of the well.

Another object is to provide a combination capping and packing device from which the well may be produced as it is capped and the further object of safeguarding the workers during the casing cutting operation.

Other objects, advantages, and features of invention may appear from the accompanyin drawings, the subjoined detailed descriptidii, and the appended claims. I

In the drawings a Figure 1 is a side elevation-partly in section of my device showing the casing cut and the stop in position. i

Figure 2 is a fragmentary side. elevation with parts broken away to show interior construction and illustrating the cutting element in position after cutting the casing.

Figure 3 is an enlarged fragmentary half sectional view of the feed arrangement. I

V Figure 1 is a sectional view taken on line a, 4 of Figurel. V t

Figure 5 is a plan View of the cutting carriage. y l v Figure 6 is a side elevation, partly in sec- 4 tion, of my packing device with the packer in position. 7 a

Figure 7 is a longitudinal sectional view of the packer placing cartridge.

Figure 8 is a plan view of the same.

Figure 9 is an enlarged fragmentary View of the expandible plates24= shown in Figure 7. i I

ings, the numeral 1' indicates the bowl of my pipe.

stopping the flowthroughthe casing. The

capping and packing device which is made .valve is? then closedand. this valve fits in two sections 2, 3 which sections are adapted to be placed around thecasing 4 and securely bolted in position in the usual and well-known manner. An opening 5 is provided in one side of the member 3- and a gate valve 6 is mounted over this opening. A pipe 7 extends from the valve 6 and a second valve 8 is positioned at the forward end of said The valves 6, 8 are of usual and'wellknownconstruction and the details of these valves form no part of this invention. a

' A reducing nipple 9 issecured to the valve 8 and a threaded sleeve=10 of any desired length screws into the forward end ofthe nipple. A packing gland 11 is formed in the sleeve 10 and fits closely about the shaft12 to prevent leakage around the shaft. The

a shaft 12 terminates at its inner endrin a any suitable source ofpower (not shown). 'An outlet valve 16 is mounted 011 themember 2 and this valve may be opened as the well 1 is capped so as to permit the wellto flow therethrough. c 1 i r T When it is desired to cap the well theparts are arranged as shdwnin Figures 1 and 2 with the valves 16 and 6 closed. The .valve .8 1s openand upon removmg the nipple 9 the carriage 14 and cutter 13, are moved into the pipe 7. The nipple 9 is nowv mounted 1n position and the valve 6 is opened. The cutteris advancedfuntil it contacts with the 5 5 jcasing 4. after which the shaft 12 is rotated and gradually advanced through the sleeve 10until the cutterhas severed the casing.

When the casing has been cut the carriage 14 r 'is pulled outwardly, the valve 6 is again 7 closed and the carriage is removed from. the

pipe-7.

A plate 17 is now pushed into thepipe 7 in the groove-ways 15. A bar (not shown) corresponding to the shaft 12 bears against the plate '17. and when'the valve 6 is. now

7 a V i opened thisplate can be .shovedintothe Referring more particularly to the drawbowl 1, asshown in'Figure 1, thus effectively against the plate 17, thus securely holding it in position. Now if desired, the valve 16 may be opened and the well can continue to flow under proper supervision.

At times it is not desirable to cap the well as previously described or perhaps it is not possible to do this because of the presence of drilling tools in the casing. For th contingency I provide a packing means as follows: A bowl 18 is secured around the casing in the same manner as previously described and the bowl is provided with valves 19, 20 corresponding to the valves previously described. The pipe 21 extends from the valve 19 and is provided with groove-ways 22 as previously descrbed.

A cartridge 23 is adapted to be pushed into the pipe in the same manner as the plate 17 and within this cartridge I position a pair of expandible plate 24 which plates are secured to a cable 25. The two plates are pivotally secured together at the top thereof as shown at 24t. The lower end of the cable is provided with a loop 26' which is adapted to fit over a hook 27 in the bowl 18. The plates, cable, and loop are preferably positioned, as shown in Figure 7, so that the cartridge is advanced in the pipe 21 the loop will engage the hook and be held thereby. The cable is of steel and stiil' enough to remain bent in the position to engage the hook 27. A notch 27 is provided in the front edge of the cartridge 23 to prevent the loop 26 from slip ping sideways.

A spring 28 is positioned in the cartridge and bears against the plates, the spring being held compressed by a trigger 29 mounted on top of the cartridge. The trigger 29 is engaged and depressed by the cam 30, thus releasing the plates and the spring 28 forces them outwardly into the casing. The pres sure in the well forces the plates upwardly and expands them against the sides of the asing, as shown in Figure 6, after which packing may be fed through the pipe. The packing lodges against the plates 24 and effectively seals'the well. The plates 24 in themselves are not sutiicicnt to entirely shut off the well, but they act as a stop for packing which is subsequently ted against the plates.

Having described my invention, I claim:

1. A combination capping and packing device tor an oil well casing comprising a bowl adapted to be mounted around the well rasing, a valve secured to the bowl, a pipe extending from the valve, said i and bowl having groove-ways formed therein, a cartridge adapted to fit into the groove-\wys, expandible plates mounted in the cartridge, a cable secured to the plates, and a hook upon which the cable is adapted to be secured when the plates are carried upwardly in the casing.

2. A combination capping and packing device for an oil Well casing comprising a bowl CLAUD HARRY BARRETT. 

